package com.itheima.bos.web.action.base;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;

import com.itheima.bos.domain.base.Area;
import com.itheima.bos.service.base.IAreaService;
import com.itheima.bos.utils.PinYin4jUtils;
import com.itheima.bos.web.action.common.BaseAction;

public class AreaAction extends BaseAction<Area> {

	// 注入业务层对象
	@Autowired
	private IAreaService areaService;

	// 获取上传的文件
	private File file;

	public void setFile(File file) {
		this.file = file;
	}

	// 文件批量导入
	@Action(value = "area_batchImport")
	public String batchImport() throws IOException {

		// 定义list集合来存区域对象
		List<Area> list = new ArrayList<Area>();

		// 加载Excel文件对象
		HSSFWorkbook hssfWorkBook = new HSSFWorkbook(new FileInputStream(file));
		// 读取sheet
		HSSFSheet sheet = hssfWorkBook.getSheetAt(0);
		// 读取sheet中的每一行
		for (Row row : sheet) {
			// 判断是不是第一行
			if (row.getRowNum() == 0) {
				continue;// 是，就跳过
			}
			// 跳过空行
			if (row.getCell(0) == null
					|| StringUtils.isBlank(row.getCell(0).getStringCellValue())) {
				continue;
			}
			Area area = new Area();
			area.setId(row.getCell(0).getStringCellValue());
			area.setProvince(row.getCell(1).getStringCellValue());
			area.setCity(row.getCell(2).getStringCellValue());
			area.setDistrict(row.getCell(3).getStringCellValue());
			area.setPostcode(row.getCell(4).getStringCellValue());
			// 基于pinyin4j生成简码
			String province = area.getProvince();
			String city = area.getCity();
			String district = area.getDistrict();
			province = province.substring(0, province.length() - 1);
			city = city.substring(0, city.length() - 1);
			district = district.substring(0, district.length() - 1);
			// 生成简码
			// 简码
			String[] headArray = PinYin4jUtils.getHeadByString(province + city
					+ district);
			StringBuffer buffer = new StringBuffer();
			for (String headStr : headArray) {
				buffer.append(headStr);
			}
			String shortcode = buffer.toString();
			area.setShortcode(shortcode);
			// 城市编码
			String citycode = PinYin4jUtils.hanziToPinyin(city, "");
			area.setCitycode(citycode);

			list.add(area);
		}
		// 调用业务层
		areaService.savaBatch(list);

		return SUCCESS;
	}

	// 分页查询操作
	@Action(value = "area_pageQuery", results = { @Result(name = "success", type = "json") })
	public String pageQuery() {
		// 构造分页查询对象
		Pageable pageable = new PageRequest(page - 1, rows);

		// 根据条件构建查询对象
		Specification<Area> specification = new Specification<Area>() {

			@Override
			public Predicate toPredicate(Root<Area> root,
					CriteriaQuery<?> query, CriteriaBuilder cb) {
				// 存放查询条件对象
				List<Predicate> list = new ArrayList<Predicate>();

				if (StringUtils.isNotBlank(model.getProvince())) {
					// 查询省份，模糊查询
					Predicate p1 = cb.like(root.get("province")
							.as(String.class), "%" + model.getProvince() + "%");
					list.add(p1);
				}

				if (StringUtils.isNotBlank(model.getCity())) {
					// 查询城市，模糊查询
					Predicate p2 = cb.like(root.get("city").as(String.class),
							"%" + model.getCity() + "%");
					list.add(p2);
				}

				if (StringUtils.isNotBlank(model.getDistrict())) {
					// 查询区域，模糊查询
					Predicate p3 = cb.like(root.get("district")
							.as(String.class), "%" + model.getDistrict() + "%");
					list.add(p3);
				}

				return cb.and(list.toArray(new Predicate[0]));
			}
		};

		Page<Area> pageData = areaService.findPageData(specification, pageable);
		// 调用pushPageDataToValueStack
		pushPageDataToValueStack(pageData);
		return SUCCESS;
	}

}
